\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{circuitikz}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing, decorations.pathreplacing, decorations.shapes}
\ctikzset{bipoles/length=1cm}
\begin{document}
\small
\begin{circuitikz}[>=latex, scale=1,european]
  % \useasboundingbox(0.9,0)rectangle(5.1,5);
  \draw (0,0) to [vC] (0,2)--(1.8,2) to [american inductor] (1.8,0)--(0,0);
  \draw (.9, 0) to(.9,-.1) node [ground]{} ;
  \node at (-.75,1.0){$C_1$};
  \node at (1.6,1.0){$L_1$}; 
  \node at (2.8,1.0){$L_2$};
  \ctikzset{diodes/scale=0.6}  \draw (2.6,0) to  [american inductor] (2.6,2) to [full diode=$D$](5,2)--(6,2)to [mic=耳机](6,0) -- (0,0) ;
  \draw (5,0)to [C=$C_2$, *-*] (5,2);
  \draw (.9, 2) to(.9,2.3) node [bareantenna]{} ;
  \draw[dashed](2.2, 0)--(2.2,2.5);\draw[dashed](3.2, -.5)--(3.2,2.5);
  \draw (2.6,0) [fill=black] circle (1.5pt);
  \draw (1.8,0) [fill=black] circle (1.5pt);
  \draw (.9, 0) [fill=black] circle (1.5pt);
  \draw (.9, 2) [fill=black] circle (1.5pt);
\end{circuitikz}
\end{document}